ESANG, D. M.; IKEH, A. O. Response of Some Improved Upland Rice Varieties to Different Sources and Rates of Nitrogen Fertilizer in A Humid Rain Forest Region. American Journal of Agricultural Science, Engineering and Technology, [S. l.], v. 5, n. 2, p. 69–91, 2021. DOI: 10.54536/ajaset.v5i2.75. Disponível em: Acesso em: 20 jan. 2022.